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-   -   [ICEM] Meshing prob at the surface joint (http://www.cfd-online.com/Forums/ansys-meshing/109102-meshing-prob-surface-joint.html)

sakurabogoda November 9, 2012 03:09

Meshing prob at the surface joint
 
3 Attachment(s)
Dear All,

I am trying to mesh a geometry by hexa grids in ICEM CFD. The problem happens in the connection of two cylinders.

There is an extended mesh in the connections.

(Please refer the attache files for the image views of connection, blocking and pre mesh)

Can any body help me to fix this problem?

BrolY November 9, 2012 04:21

This has already be solved before. If you make a quick research, you should be able to find the link to this file "ICEMCFD_Tips&Tricks2010.pdf" made by Simon. Everything is explained in this document ;)

Far November 9, 2012 04:28

create blocking for the bigger pipe including ogrid. Then create the blocking by extrude along curve. There are many other methods to blocks including first creating the one big block for both pipes. Just try.

sakurabogoda November 9, 2012 05:10

Dear Boles,

I could find some presentations by Simon. But those cannot be downloaded. Can you please give me the exact link. I found this link,
ftp://ftp.ansys.com/outgoing/simon/ICEM_Tips2008.pdf
but cannot load the page.
Thank a lot for your help.

Sakura.

sakurabogoda November 9, 2012 05:12

Dear Far,
Thanks for the hint. I'll try with it.

Far November 9, 2012 05:35

Quote:

Originally Posted by sakurabogoda (Post 391179)
Dear Boles,

I could find some presentations by Simon. But those cannot be downloaded. Can you please give me the exact link. I found this link,
ftp://ftp.ansys.com/outgoing/simon/ICEM_Tips2008.pdf
but cannot load the page.
Thank a lot for your help.

Sakura.

Simon told that ftp is closed permanently. Look for http link.

BrolY November 9, 2012 05:48

https://securetransfer.ansys.com/bds...jbeilcchidej20

Far November 9, 2012 06:19

found it

https://docs.google.com/file/d/0ByIL...MjQ/edit?pli=1

sakurabogoda November 11, 2012 07:52

Dear All, Thanks a lot for supports.

There is another prob with o grid generation.

01. First I blocked vertical cylinder, rotated it 30 degrees around Y axis and generated an o grid in it.
02. then, extruded the surface in to horizontal cylinder and split that block.
03. generated an o grid there. The problem occurred here.

Prob: When I created the o grid inside the extruded section, the o grid generate, but out side from the block. I haven't select "Around blocks"

Can anybody answer me why this is happening?

sakurabogoda November 11, 2012 07:53

Dear All, Thanks a lot for supports.

There is another prob with o grid generation.

01. First I blocked vertical cylinder, rotated it 30 degrees around Y axis and generated an o grid in it.
02. then, extruded the surface in to horizontal cylinder and split that block.
03. generated an o grid there. The problem occurred here.

Prob: When I created the o grid inside the extruded section, the o grid generate, but out side from the block. I haven't select "Around blocks"

Can anybody answer me why this is happening?

Far November 11, 2012 07:56

can you show the pics from different angles?

sakurabogoda November 11, 2012 08:24

5 Attachment(s)
Dear Far,
Thank you so much for this immediate reply. I have attached all figures as steps I followed from jPEGs named ogrid0 to ogrid4.

Thanks again.

Far November 11, 2012 12:24

Pics are not clear. There are two tangential pipes going into the larger dia pipe?

sakurabogoda November 11, 2012 22:11

3 Attachment(s)
Dear Far,
Yes, it has two tangential pipes joint. I have added more pics herewith. Still I cannot fix the solution. :(

sakurabogoda November 11, 2012 22:18

1 Attachment(s)
This is how ogrid generated around the block. it is around the block. Still I cannot fix this prob.

BrolY November 12, 2012 03:36

Associate first before doing the O-Grid and the extrude.

sakurabogoda November 13, 2012 05:59

Finally I could fix it. It happens in split blocking and then extrusion. If the whole face extruded and then split it, ogrid generates inside the block. But I don't know what is the reason.

But thank you so much for your helps.

Aysiyi November 13, 2012 06:09

i think when you extrude face ,did you choose the inherit part name option ?

sakurabogoda November 13, 2012 06:21

2 Attachment(s)
Dear All,

I got a problem again. It is not relates to ogrid.

When I do the meshing, unwanted mesh extension generates from the cylinder top to bottom cone top curve. Pls refer the pics attached.

Can anybody help me?

sakurabogoda November 13, 2012 06:24

Dear Aysisi,

There is no such an option in extrude faces. I used "Extrude alone a curve".


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